A New Hypersonic Wind Tunnel Force Measurement System to Reduce Additional Bending Moment and Avoid Time-Varying Stiffness [PDF]
Sensors, 2022 In order to improve traditional hypersonic wind tunnel airframe/propulsion integrated aerodynamic testing technology for hypersonic vehicles, a new force measurement system called the aerodynamic force measuring support (AFMS) was designed.
Shichao Li +3 more
doaj +2 more sources
Modernization of Sandia’s Hypersonic Wind Tunnel
53rd AIAA Aerospace Sciences Meeting, 2015 Sandia’s Hypersonic Wind Tunnel (HWT) became operational in 1962, providing a test capability for the nation’s nuclear weapons complex. The first modernization program was completed in 1977. A blowdown facility with a 0.46-m diameter test section, the HWT operates at Mach 5, 8, and 14 with stagnation pressures to 21 MPa and temperatures to 1400K ...
Steven J. Beresh +5 more
semanticscholar +4 more sources
Characterization of Freestream Disturbances in Conventional Hypersonic Wind Tunnels. [PDF]
J Spacecr Rockets, 2019 While low disturbance ("quiet") hypersonic wind tunnels are believed to provide more reliable extrapolation of boundary layer transition behavior from ground to flight, the presently available quiet facilities are limited to Mach 6, moderate Reynolds numbers, low freestream enthalpy, and subscale models.
Duan L +13 more
europepmc +5 more sources
3D Numerical Simulation and Structural Optimization for a MEMS Skin Friction Sensor in Hypersonic Flow [PDF]
Micromachines, 2022 The skin friction of a hypersonic vehicle surface can account for up to 50% of the total resistance, directly affecting the vehicle’s effective range and load.
Huihui Guo +4 more
doaj +2 more sources
Advances in Aerodynamics, 2020 Advanced sensing techniques are in big demand for applications in hypersonic wind tunnel harsh environments, such as aero(thermo)dynamics measurements, thermal protection of aircraft structures, air-breathing propulsion, light-weighted and high-strength ...
Huacheng Qiu, Fu Min, Yanguang Yang
doaj +2 more sources
MEMS Skin Friction Sensor with High Response Frequency and Large Measurement Range [PDF]
Micromachines, 2022 Micro-electromechanical system (MEMS) skin friction sensors are considered to be promising sensors in hypersonic wind tunnel experiments owing to their miniature size, high sensitivity, and stability.
Huihui Guo +4 more
doaj +2 more sources
Carbon Fiber Oxidation in 4D. [PDF]
Adv MaterThe oxidation of porous carbon fiber heat shield material at high temperatures is imaged using time‐resolved synchrotron X‐ray microtomography. Resolving the interplay between species diffusion and carbon‐oxygen reaction rate reveals spatially and temporally varying degradation across oxidation regimes, with profound implications for in‐depth material ...
Ringel BM +14 more
europepmc +2 more sources
Micro-Assembly Error Control of Specialized MEMS Friction Sensor [PDF]
MicromachinesA skin friction sensor is a three-dimensional MEMS sensor specially designed for measuring the skin friction of hypersonic vehicle models. The accuracy of skin friction measurement under hypersonic laminar flow conditions is closely related to the ...
Wei Zhou +4 more
doaj +2 more sources
Hypersonic Aerodynamic Force Balance Using Micromachined All-Fiber Fabry–Pérot Interferometric Strain Gauges [PDF]
Micromachines, 2019 This paper presents high-sensitivity, micromachined all-fiber Fabry–Pérot interferometric (FFPI) strain gauges and their integration in a force balance for hypersonic aerodynamic measurements.
Huacheng Qiu +4 more
doaj +2 more sources
A novel method to realize a non-uniform heat flux distribution through the variable-speed scanning of an electron beam [PDF]
Scientific Reports, 2021 Quartz lamp heaters and hypersonic wind tunnel are currently applied in thermal assessment of heat resistant materials and surface of aircraft. However, it is difficult to achieve precise heat flux distribution by quartz lamp heaters, while enormous ...
Chuanmao Zheng +3 more
doaj +2 more sources